Solutions for the coding exercises in Tim Buchalka's Java Programming Masterclass on Udemy.
This repository contains my personal solutions to the coding challenges from Tim Buchalka's Java Programming Masterclass. It covers a wide range of topics from beginner to advanced Java, updated for 2025.
All challenges are in separate folders with code and explanation.
📁 Click to expand full challenge list
- Challenge 01 - Positive, Negative or Zero
- Challenge 02 - Speed Converter
- Challenge 03 - MegaBytes Converter
- Challenge 04 - Barking Dog
- Challenge 05 - Leap Year Calculator
- Challenge 06 - Decimal Comparator
- Challenge 07 - Equal Sum Checker
- Challenge 08 - Teen Number Checker
- Challenge 09 - Area Calculator
- Challenge 10 - Minutes to Years and Days Calculator
- Challenge 11 - Equality Printer
- Challenge 12 - Playing Cat
- Challenge 13 - Number In Word
- Challenge 14 - Number Of Days In Month
- Challenge 15 - Sum Odd
- Challenge 16 - Number Palindrome
- Challenge 17 - First And Last Digit Sum
- Challenge 18 - Even Digit Sum
- Challenge 19 - Shared Digit
- Challenge 20 - Last Digit Checker
- Challenge 21 - Greatest Common Divisor
- Challenge 22 - All Factors
- Challenge 23 - Perfect Number
- Challenge 24 - Number To Words
- Challenge 25 - Flour Pack Problem
- Challenge 26 - Largest Prime
- Challenge 27 - Diagonal Star
- Challenge 28 - Input Calculator
- Challenge 29 - Paint Job
- Challenge 30 - Sum Calculator
- Challenge 31 - Person
- Challenge 32 - Wall Area
- Challenge 33 - Point
- Challenge 34 - Carpet Cost Calculator
- Challenge 35 - Complex Operation
- Challenge 36 - Cylinder
- Challenge 37 - Pool Area
- Challenge 38 - Composition
- Challenge 39 - Encapsulation
- Challenge 40 - Polymorphism
- Challenge 41 - Bill's Burgers
- Challenge 42 - Sorted Array
- Challenge 43 - Minimum Element
- Challenge 44 - Reverse Array
- Challenge 45 - Mobile Phone
- Challenge 46 - Bank
- Challenge 47 - Playlist
- Challenge 48 - Interface
- Challenge 49 - Playlist (Inner Class)
- Challenge 50 - Abstract Class
- ✅ Compare your solutions with mine
- 💡 Get ideas if you're stuck
- 🧠 Learn different ways to solve problems
See a bug or better solution? You're welcome to contribute!
- 📌 Open an issue for bugs or suggestions
- 🗣️ Use Discussions for questions
Thanks to Tim Buchalka & the Learn Programming Academy for the amazing course.